- Enjoy reliable communication with a range of up to 100 meters between the infrared sensor and receiver, making it ideal for various spaces. - The alarm system features 38 distinct ring tones, allowing you to customize how you greet guests. Choose from 3 volume levels: loud, medium, or quiet. - Select your preferred alert mode: either a combination of ring tones and LED lighting or solely LED lighting for discretion. - The sensor effectively detects motion within a vertical range of 3 to 7 meters and a horizontal range of 3 to 5 meters, ensuring comprehensive coverage for your home or shop. - Power the sensor with either 3 AAA batteries or a 5V USB power supply (not included), while the receiver operates on DC 110V - 240V or with a 5V USB power adapter. - Receiver dimensions: 76 x 80 x 33 mm; Sensor dimensions: 80 x 59 x 45 mm, making it compact enough for easy placement. - Perfect for securing windows, doors, and garage doors, this motion detector alarm enhances safety and provides peace of mind. Use scenarios: 1. Install at front doors to alert you of arriving guests with a pleasant chime. 2. Set up near windows to deter intruders with motion detection and immediate alerts. 3. Position it in a garage to notify you when someone enters, enhancing security for vehicles and tools.